SYNTHETIC FULVIC ACIDS FROM TANNIN

Authors

DOI:

https://doi.org/10.15421/082027

Keywords:

tannin, fulvic acid, synthetic humic substances

Abstract

This research introduces a new, simple and effective method of producing synthetic fulvic acids from tannin. The synthesis is based on the reaction of tannin oxidation by pure oxygen in a highly alkaline environment. The conversion of fulvates to the acid was achieved by passing the resulting mixture through a cation-exchange column in the H-form. The resulting dark-brown product solution has a pH = 2. A complex study of the physicochemical and spectroscopic properties of the obtained product using the methods of elemental analysis, ultraviolet-visible, infra red and electron paramagnetic resonance spectroscopy, scanning electron microscopy, X-ray diffraction showed the similarity of the obtained product to natural fulvic acids. Synthetic fulvic acids are advantageous over natural humic substances due to their reproducible properties as a result of their strict synthesis conditions. This significantly expands the scope of their application, in particular in medicine, where one of the prerequisites is the standardization of properties.

Author Biographies

Valentina A. Litvin, Bohdan Khmelnitsky National University of Cherkasy

Department of Chemistry and Nanomaterial Science, Associate professor, PhD

Roger Abi Njoh, Near East University

Department of Toxicology, PhD student

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Published

2021-01-10